Description:Arsenal manager Arsene Wenger admitted on Thursday (August 21) that he might sign a defensive midfielder before the transfer window closes. After midfielder Aaron Ramsey's dismissal during Tuesday's (August 19) 0-0 draw at Besiktas, in a Champions League playoff first leg tie, and an ankle injury suffered by captain Mikel Arteta in the same game has left him considering a move for a defensive midfielder.(4:04)